If x = a secθ cos∅, y = b secθ sin∅, z=c tanθ, then the value of

If θθθθ then sinθ is equal to ;

 if and then the value of A and B are

θθθθθθ

△ABC is right-angle triangle at B and tan A = , then sin A + sin B + sin C will be equal to:

Find the exact value of cos 120⁰.

In ∆PQR, ∠Q=90°. If cot , then what is the value of ?

Find the value of tan 27⁰ tan34⁰ + tan34⁰ tan29⁰ + tan29⁰ tan27⁰.